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Across
  1. 2. forms from the remains of plants that lived in swamps hundreds of millions of years ago
  2. 4. is an organism from which a parasite takes food and shelter
  3. 7. is the accumulation of pollutants at successive levels of the food chain
  4. 8. is the amount of a harmful substance to which a person is exposed
  5. 9. is the damage to health that results from exposure to a given dose
  6. 10. is an intermediate host that transfers a pathogen or a parasite to another organism
Down
  1. 1. is a disorder of nutrition that results when a person does not consume enough of each of the nutrients
  2. 3. is the widespread malnutrition and starvation in an area due to a shortage of food
  3. 5. is a pollutant that is put directly into the atmosphere by human or natural activity
  4. 6. is water that contains wastes from homes or industry